CVE-2024-35835: net/mlx5e: fix a double-free in arfs_create_groups

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-05-17 · updated 2026-08-04
Weakness: CWE-415

Description

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: fix a double-free in arfs_create_groups When `in` allocated by kvzalloc fails, arfs_create_groups will free ft->g and return an error. However, arfs_create_table, the only caller of arfs_create_groups, will hold this error and call to mlx5e_destroy_flow_table, in which the ft->g will be freed again.

Affected products

Debian Linux: 10.0
Linux kernel: from 4.7 before 4.19.307; from 4.20 before 5.4.269; from 5.5 before 5.10.210; from 5.11 before 5.15.149; from 5.16 before 6.1.76; from 6.2 before 6.6.15 — fixed in 4.19.307, 5.10.210, 5.15.149, 5.4.269, 6.1.76, 6.6.15

How to fix

Upgrade to a fixed version: Linux kernel 4.19.307, 5.10.210, 5.15.149, 5.4.269. Check the vendor advisory for mitigations.

References

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